High-frequency loss modeling of nanocrystalline core considering nonuniform distribution of flux density

被引：0

作者：

Meng, Wenbin ^{[1
,2
]}

Zhang, Changgeng ^{[1
,2
]}

Li, Yongjian ^{[1
,2
]}

Sun, He ^{[1
,2
]}

Wan, Zhenyu ^{[1
,2
]}

机构：

[1] Hebei Univ Technol, State Key Lab EERI, Tianjin 300130, Peoples R China

[2] Hebei Univ Technol, Sch Elect Engn, Key Lab Electromagnet Field & Elect Apparat Reliab, Tianjin 300130, Peoples R China

来源：

AIP ADVANCES | 2024年 / 14卷 / 02期

基金：

中国国家自然科学基金;

关键词：

High frequency transformers - Nanocrystals;

D O I：

10.1063/9.0000650

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Nanocrystalline core is widely used in the design process of high-frequency transformers and inductors due to the attractive magnetic properties of nanocrystalline material. However, the flux density distribution is nonuniform in the core because the reluctance is closely related to its geometric shape. The nonuniformity of flux density distribution may cause huge calculation errors of core losses. In this paper, Finite Element Method (FEM) is used to justify taking into account nonuniform distribution of flux density during the process of core loss calculation. An improved loss separation equation considering nonuniform distribution of flux density is proposed, and the improved equation is verified through calculating and analyzing the losses of nanocrystalline cores with different wound thicknesses. Compared with the traditional loss separation equation, the accuracy is improved, and the average error of improved equation is confined in 10%. (c) 2024 Author(s).

引用

页数：6

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